Disposal of waste syringes in a safe and eco-friendly way has been an issue of considerable scale for decades. The generated amount of waste syringes escalated with the rapid growth in population and wide acceptance towards single-use medical devices. Some hospitals have their own on-site incinerators, but recently tightening air quality regulations and landfill levies led to the closure of many onsite incinerators. The solution to this problem implicates the development of an environmentally-sound method that would employ these waste materials. This work investigates a thermodynamic modelling approach for incineration treatment of waste plastic syringes in an Electric Arc Furnace Steelmaking. Mass and energy balances obtained from HSC Chemistry. The results indicate that the rate of iron oxide reduction is higher when coke is partially replaced by waste plastic syringes. Furthermore, the CO2 emission reduced up to 80 % by replacing 10% weight of pure coke with waste plastic syringes.